Issue #245 update to Android Studio 0.5.7

https://github.com/couchbase/couchbase-lite-android/issues/245
Issue #35 - add WWW-Authenticate header

https://github.com/couchbase/couchbase-lite-java-listener/issues/35
Merge remote-tracking branch 'upstream/master'

Conflicts:
	gradle/wrapper/gradle-wrapper.properties